Malicious PDF — malware analysis report

Static analysis result for SHA-256 514192f5dec11079…

MALICIOUS

PDF

45.2 KB Created: 2021-05-13 09:41:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 25ae08912efef8345383c2028c44f88e SHA-1: 1ae87512d81648c68d53a68244e8016db37a4eeb SHA-256: 514192f5dec110790d0c27a3244c2f325ca5cf274a6f574b93cdda251f9b6de0
138 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack redirector lure, pointing to a malicious URL. The document body also contains text and a call-to-action button related to downloading a generator. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0115

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/google-how-do-you-get-free-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000314a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314A 29348 bytes
SHA-256: 95e054a5f686f206723fcebda43c65f8ea63af7f83615a9ac9e58f257588b676
font_01_sfnt_off000072b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B3 4040 bytes
SHA-256: b52c45903063c68ddac4d6aef6aa6bfd21fcb36297c4c3a7174f4a9ff53286f0
font_02_sfnt_off00008005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8005 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00008d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D17 18972 bytes
SHA-256: 7e42234451cc840f7005e057c881a5adaeb6eb05dfbb8a23217c49a1ae6b06df

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